Calculator



FIG. 1 is a perspective view of a calculator showing my new design;

FIG. 2 is a left side elevational view thereof, the right sideelevational view being a mirror image thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a calculator, as shown and described.